Origami Heaven

A paperfolding paradise

The website of writer and paperfolding designer David Mitchell

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Nolids and Other Planar Designs
 
Nolids are solids of no volume. They can be viewed as composed of triangular sections of planes which run from the centre of symmetry of a polyhedron to its edges. In modular origami nolids paper modules replace and represent these imaginary planes.

Three of these nolids are special cases in which the triangular planes line up to form larger sections of planes that are polygonal in shape. Viewed in this way, the nolid octahedron is composed of three interpenetrating squares, the nolid cuboctahedron of four interpenetrating hexagons and the nolid icosidodecahedron of six interpenetrating decagons.

Similarly my Level 2 Three Colour Octahedral Pyramid can be seen as being composed of six interpenetrating 2x1 rectangles and my 12 Interpenetrating Pentagonal Rings as being composed of, well, the title says it all really!

 
 
 
  Name: Nolid Octahedron (2-part)

Modules / Paper shape / Folding geometry: 2 modules from squares using standard folding geometry.

Designer / Date: David Mitchell, 1988.

Diagrams: On-line diagrams are available on the Modular Designs page of this site.

 
  Name: Nolid Tetrahedron

Modules / Paper shape / Folding geometry: 6 modules from silver rectangles.

Designer / Date: David Mitchell, 1988 / Ian Harrison.

Diagrams: Not yet available.

 
  Name: Nolid Cube with Two Nolid Tetrahedra

Modules / Paper shape / Folding geometry: Made by adding 30 modules, of two kinds, all folded from silver rectangles, to David Brill's Nolid Cube.

Designer / Date: David Mitchell, 2002. Based on a previous design by Ian Harrison.

Diagrams: Not yet available.

 
  Name: Six Interpenetrating Planes in a Cube

Modules / Paper shape / Folding geometry: Made by adding 30 modules, of two kinds, all folded from silver rectangles, to David Brill's Nolid Cube.

Designer / Date: David Mitchell, 2002.

Diagrams: Not yet available.

 
  Name: Skeletal Cuboctahedron (12-part) or Nolid Cuboctahedron (12-part)

Modules / Paper shape / Folding geometry: 12 modules from squares using 60/30 degree geometry.

Designer / Date: Tung Ken Lam

Diagrams:

 
  Name: Skeletal Dodecahedron or Nolid Dodecahedron

Modules / Paper shape / Folding geometry: 30 modules from squares using standard folding geometry.

Designer / Date: David Mitchell, 1988.

Diagrams: Not yet available.

 
  Name: Nolid Icosidodecahedron or Skeletal Icosidodecahedron - can be conceived of as composed of six interpenetrating decagons.

Modules / Paper shape / Folding geometry: 60 modules folded from squares using mock platinum folding geometry.

Designer / Date: David Mitchell, 1990.

Diagrams: Not yet available.

 
  Name: Four Octahedra - four Robert Neale Octahedra linked with joining pieces from squares. Larger versions are possible. .

Modules / Paper shape / Folding geometry: Each Robert Neale Octahedron is made from 6 modules from squares using standard folding geometry. Each joining piece is from a square using standard folding geometry.

Designer / Date: David Mitchell, 2016. Update of work from 1995.

Diagrams: In Building with Butterflies - David Mitchell - Water Trade - ISBN 978-0-9534774-7-0.

 
  Name: 12 Interpetrating Pentagonal Rings

Modules / Paper shape / Folding geometry: Developed from the 60-part Corner-pocket Sonobe Spiky Star by the addition of 30 extra modules to link the vertexes together into rings. All modules from squares using standard folding geometry.

Designer / Date: David Mitchell, 1995.

Diagrams: Not yet available.